CN112290144A

CN112290144A - Power storage module and power storage module package

Info

Publication number: CN112290144A
Application number: CN202010570722.6A
Authority: CN
Inventors: 樱井敦
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2019-07-10
Filing date: 2020-06-19
Publication date: 2021-01-29
Anticipated expiration: 2040-06-19
Also published as: US20210013562A1; JP7157014B2; CN112290144B; US11476515B2; JP2021015686A

Abstract

Provided are an electricity storage module and an electricity storage module package, which can ensure sufficient rigidity and vehicle-mounted performance, improve assembly performance, and improve impact resistance from below. The power storage module (10A) is provided with: a frame (11A); a plurality of power storage cells (12) housed in the housing (11A); 2 bridge parts (13, 13) which are provided inside the frame body (11A) and are used for connecting the upper part and the lower part of the frame body (11A); and 2 flange sections (14Aa, 14Ab) which are provided outside the housing (11A) and which project in opposite directions to each other. The 2 flange sections (14Aa, 14Ab) are positioned above the center section of the housing (11A) in the height direction (D3).

Description

Power storage module and power storage module package

Technical Field

The present invention relates to an electricity storage module and an electricity storage module package.

Background

Conventionally, a vehicle such as a hybrid vehicle or an electric vehicle is mounted with a power storage module for supplying electric power to a motor as a power source or storing electric power regenerated by the motor (generator).

The power storage module includes a plurality of stacked power storage cells. As the electric storage unit, an electric storage unit configured by housing a battery element including a positive electrode and a negative electrode inside a metal unit can, and an electric storage unit configured by encapsulating a battery element in a resin laminate film are known. The electric storage cells have, for example, a pair of positive and negative electrode terminals on the outside, and the electrode terminals of adjacent electric storage cells are electrically connected in series or in parallel by a bus bar.

In recent years, with the increase in output of hybrid vehicles, electric vehicles, and the like, the size of the power storage module tends to increase in order to secure a capacity. However, in the vehicle, since the installation space of the equipment is restricted, if the size of the power storage module is increased, the power storage module may not be mounted satisfactorily. Therefore, for example, a power storage module including a battery pack in which a plurality of batteries are stacked, end plates provided at both ends of the battery pack in the stacking direction, and a connection belt connecting the end plates to each other has been proposed (patent document 1). In this electricity storage module, the fastening member housing portion houses a pair of fastening members that are provided directly on the end plate or adjacent to the end plate inside the connecting belt and that fix the electricity storage module to the installation site. The attachment portion of the connection band is fixed to the end plate on the center side of the plate surface of the end plate with respect to the fastening member accommodation portion. According to this configuration, the area of the heat sink disposed on the pair of fastening members can be ensured satisfactorily, and the entire apparatus can be easily downsized.

Prior art documents

Patent document

Patent document 1: japanese patent No. 6254904

Disclosure of Invention

Problems to be solved by the invention

In the technique of patent document 1, when the power storage module is mounted on a vehicle in a state of being housed in an outer case, a bolt inserted through an end plate of the power storage module is screwed into a female screw portion of the outer case, and the end plate is fastened and coupled to the outer case. However, since the lower surface of the end plate is close to the outer case, the shape of the outer case is restricted, and it is difficult to ensure the rigidity of the outer case. On the other hand, when a reinforcing member is added to increase the rigidity of the outer case, the dimension of the outer case in the height direction increases, and the vehicle-mountability may decrease.

Further, since the bolt is inserted through the end plate, it is difficult to align the through hole of the end plate with the female screw portion of the outer case, and the assembling property of the power storage module with the outer case is low.

In addition, for example, when the lower surface of the vehicle is accidentally grounded, an impact from below the outer case is transmitted to the female screw portion and is directly transmitted to the power storage module via the female screw portion, which may cause a problem in the power storage module. Therefore, structural measures need to be taken to withstand the impact from below.

The purpose of the present invention is to provide an electricity storage module and an electricity storage module package that can improve the ease of assembly and improve the impact resistance against downward impact while ensuring sufficient rigidity and vehicle-mounting performance.

Means for solving the problems

[1] The power storage module includes: a frame body; a plurality of power storage cells housed in the housing; a bridge portion provided inside the frame body for connecting an upper portion and a lower portion of the frame body; and 2 flange portions provided outside the housing and projecting in opposite directions to each other, the 2 flange portions being located above a central portion of the housing in a height direction.

[2] In the power storage module according to item [1], the frame includes a bottom plate, a top plate, and 2 side plates connecting the bottom plate and the top plate, and the 2 flange portions extend from the side plates in a lateral direction of the frame and extend substantially entirely in a longitudinal direction of the side plates.

[3] In the power storage module according to [1], a sheet-shaped temperature control device is attached to at least one of an upper portion and a lower portion of the housing.

[4] In the power storage module according to item [3], the cooling medium inlet/outlet of the temperature control device is disposed on a side opposite to positive and negative terminals of the plurality of power storage cells.

[5] An electricity storage module package comprising a plurality of electricity storage modules and a case housing the electricity storage modules, the electricity storage modules comprising: a frame body; a plurality of power storage cells housed inside the housing; a bridge portion provided inside the frame body for connecting an upper portion and a lower portion of the frame body; and 2 flange portions provided outside the housing and projecting in opposite directions to each other, the 2 flange portions being located above a central portion of the housing in a height direction, the case including: a bottom wall portion; and a plurality of first vertical wall portions extending from the bottom wall portion and arranged in a spaced-apart arrangement, wherein the 2 flange portions of the frame are fixed to upper end portions of the adjacent 2 first vertical wall portions, respectively.

[6] In the power storage module package according to item [5], a space is provided between the frame of the power storage module and the bottom wall of the case.

[7] In the power storage module package according to item [6], a heat insulating member is disposed in the space.

[8] In the power storage module package according to any one of the above [5] to [7], a sheet-shaped temperature control device is mounted on at least one of an upper portion and a lower portion of the frame of the power storage module.

[9] In the power storage module package according to item [8], the cooling medium inlet/outlet of the temperature control device is disposed on a side opposite to the electrode terminals of the plurality of power storage cells.

[10] In the power storage module package according to item [5], the plurality of first vertical wall portions include thick vertical wall portions disposed at a central portion of the case in a plan view, and thin vertical wall portions disposed adjacent to the thick vertical wall portions.

[11] The electricity storage module package according to item [10] above, wherein the thick-walled vertical wall portion has, at an upper end portion thereof, a non-overlapping portion where the flange portion provided on one of the 2 adjacent electricity storage modules does not overlap with the flange portion provided on the other of the 2 electricity storage modules, and the thin-walled vertical wall portion has, at an upper end portion thereof, an overlapping portion where the flange portion provided on one of the 2 adjacent electricity storage modules overlaps with the flange portion provided on the other of the 2 electricity storage modules.

[12] The power storage module package according to any one of [5] to [11], wherein the case further includes at least 1 second vertical wall portion provided perpendicular to the plurality of first vertical wall portions.

[13] The power storage module package according to any one of [5] to [12], further comprising a lid body detachably provided to cover an upper portion of the case body.

Effects of the invention

According to the present invention, it is possible to improve the assembling property and the impact resistance against the impact from below while securing sufficient rigidity and vehicle-mounting property.

Drawings

Fig. 1 is a perspective view schematically showing the overall structure of a power storage module package according to an embodiment of the present invention.

Fig. 2 (a) is a plan view schematically showing the structure of the case in fig. 1, and fig. 2 (b) is a cross-sectional view of the case taken along line II-II in fig. 2 (a).

Fig. 3 is a perspective view showing the structure of the power storage module in fig. 1.

Fig. 4 is an exploded perspective view of the power storage module of fig. 3.

Fig. 5 (a) is a cross-sectional view showing the structure of one power storage module of fig. 1, and fig. 5 (b) is a cross-sectional view showing the structure of another power storage module of fig. 1.

Fig. 6 (a) is a cross-sectional view of the power storage module package along line I-I of fig. 1, and fig. 6 (b) is an enlarged partial cross-sectional view of a portion indicated by a broken line P.

Fig. 7 (a) is a cross-sectional view showing a modification of the 2 flange portions in fig. 5 (a), and fig. 7 (b) is a cross-sectional view showing another modification.

Fig. 8 (a) and 8 (b) are cross-sectional views each showing another modification of the 2 flange portions in fig. 5 (a).

Fig. 9 (a) is a cross-sectional view showing a modification of the power storage module package of fig. 1, and fig. 9 (b) is a cross-sectional view showing another modification of the power storage module package of fig. 1.

Fig. 10 is a cross-sectional view showing a modification of the power storage module package shown in fig. 6 (b).

Fig. 11 (a) and 11 (b) are plan views showing modifications of the casing in fig. 2 (a).

Fig. 12 is a plan view showing another modification of the case in fig. 2 (a).

Description of reference numerals:

1 electric storage module package

2 case body

3 cover body

4 bolt

5 case body

6 case body

7 case body

10A power storage module

10B power storage module

11 frame body

11A frame body

11B frame

12 electric storage unit

12a one end

13 bridge parts

13a wall surface

14Aa flange part

14Ab flange part

14Ba flange part

14Bb flange part

15a opening part

15b opening part

16 unit housing space

17 unit housing space

18 pressing member

19 temperature regulating device

19a one end

19A temperature regulating device

19B temperature adjusting device

21 bottom wall part

22 first longitudinal wall part

22A thick-walled longitudinal wall part

22Aa upper end part

22B thin-walled longitudinal wall portion

22Ba upper end

23 second longitudinal wall part

23A thick-walled longitudinal wall part

23B thin-walled longitudinal wall portion

Space part 24A

Space part 24B

31 non-overlapping part

32 overlap portion

40 elastomer

41Aa flange part

41Ab flange part

42Aa flange part

42Ab flange part

43Aa flange part

43Ab Flange portion

44Aa flange part

44Ab flange part

51 Heat insulation Member

111 bottom plate part

111a wall surface

111b wall surface

112 ceiling part

112a wall surface

112b wall surface

113 side plate part

113a wall surface

119 outlet/inlet for cooling medium

119A introduction part

119B discharge part

121A positive terminal

121B negative electrode terminal

121 electrode terminals.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a perspective view schematically showing the overall structure of a power storage module package according to an embodiment of the present invention. In the drawings used in the following description, for the sake of easy understanding of the features, the portions that are characteristic may be enlarged for convenience, and the shapes, the size ratios, and the like of the respective components are not limited to those shown in the drawings.

In each drawing, the direction D1 represents the longitudinal direction of the power storage module package 1. The direction D2 represents the width direction of the power storage module package 1. The direction D3 represents the height direction of the power storage module package 1. The direction indicated by the direction D3 is, for example, the vertical direction.

As shown in fig. 1, the power storage module package 1 includes: a plurality of

power storage modules

10A, 10B; a case 2 that houses the plurality of

power storage modules

10A and 10B; and a cover 3 detachably provided to cover an upper portion of the case 2. The power storage module package 1 is a low-profile case, and is placed between the floor of a vehicle and a front seat, for example.

The case 2 has a polygonal shape in a plan view, and in the present embodiment, has an octagonal shape in a plan view. The case 2 is formed of a material such as metal or resin, and is formed of, for example, a steel plate. In the case 2, a plurality of

power storage modules

10A and 10B are arranged in a matrix, and 8 power storage modules are arranged in 2 rows and 4 columns in the present embodiment.

The lid 3 has a polygonal shape in a plan view, as in the case, and has an octagonal shape in a plan view in the present embodiment. The lid body 3 is formed of a material such as metal or resin, and is formed of, for example, Glass Fiber Reinforced Plastic (GFRP). The cover 3 may be formed of the same material as the case 2 or may be formed of a different material from the case 2. The lid 3 may be detachably provided to the case 2, may be provided separately from the case 2, or may be provided integrally with the case 2. By attaching the lid 3 to the case 2, the internal space of the case 2 can be held in a sealed state.

Fig. 2 (a) is a plan view schematically showing the structure of the casing 2 in fig. 1, and fig. 2 (b) is a cross-sectional view of the casing 2 taken along the line II-II in fig. 2 (a).

As shown in fig. 2 (a) and 2 (b), the case 2 includes: a bottom wall portion 21; a plurality of first vertical wall portions 22 extending from the bottom wall portion 21 and arranged at intervals; and a second vertical wall portion 23 provided perpendicular to the plurality of first vertical wall portions 22. The plurality of first vertical wall portions 22 and the plurality of second vertical wall portions 23 form a frame structure including a main frame and a cross member, and thereby the rigidity in the longitudinal direction and the width direction (the direction D1, the direction D2) of the box body 2 is improved. In addition, in a cross-sectional view of the case 2, the first vertical wall portion 22 and the second vertical wall portion 23 extend along the height direction (the direction D3) of the case 2, and therefore the rigidity in the height direction (the direction D3) of the case 2 is improved.

Further, the first vertical wall portion 22 of the present embodiment is disposed between the adjacent

power storage modules

10A, 10A (or between the

power storage modules

10A, 10B), and the second vertical wall portion 23 is also disposed between the adjacent

power storage modules

10A, 10B. In this way, since the first vertical wall portion 22 and the second vertical wall portion 23 are disposed between the two adjacent power storage modules, the space efficiency of the case 2 is good.

The plurality of first vertical wall portions 22 are constituted by thick vertical wall portions 22A arranged at the center portion of the case 2 in a plan view, and thin vertical wall portions 22B arranged adjacent to the thick vertical wall portions 22A. In the present embodiment, the dimension of the thick vertical wall portion 22A in the height direction (direction D3) is larger than the dimension of the thin vertical wall portion 22B in the height direction (direction D3).

The thick vertical wall portion 22A is formed integrally with the bottom wall portion 21, for example, and has an upper end portion 22Aa on the side opposite to the bottom wall portion 21. A flange portion described later is placed on the upper end portion 22Aa, and the flange portion is provided in the plurality of

power storage modules

10A and 10A. A plurality of screw holes are formed in an upper end portion 22Aa of the thick vertical wall portion 22A, and the plurality of

power storage modules

10A and 10A are fixed to the thick vertical wall portion 22A by fastening members such as bolts.

The thin vertical wall portion 22B is formed integrally with the bottom wall portion 21, for example, and has an upper end portion 22Ba on the side opposite to the bottom wall portion 21. A flange portion described later is placed on the upper end portion 22Ba, and the flange portion is provided in the plurality of

power storage modules

10A and 10B. A plurality of screw holes are formed in an upper end portion 22Ba of the thin-walled vertical wall portion 22B, and the plurality of

power storage modules

10A and 10B are fixed to the thin-walled vertical wall portion 22B by fastening members such as bolts.

In the present embodiment, the plurality of first vertical wall portions 22 are constituted by the thick vertical wall portion 22A and the thin vertical wall portion 22B having different thicknesses, but the present invention is not limited thereto, and may be constituted by a plurality of first vertical wall portions having the same thickness. Further, the dimension of the thick vertical wall portion 22A in the height direction (direction D3) is larger than the dimension of the thin vertical wall portion 22B in the height direction, but the present invention is not limited thereto, and the dimension of the thick vertical wall portion 22A in the height direction (direction D3) may be the same as the dimension of the thin vertical wall portion 22B in the height direction.

Fig. 3 is a perspective view showing the structure of the power storage module 10A in fig. 1, and fig. 4 is an exploded perspective view of the power storage module 10A in fig. 3. Fig. 5 (a) is a cross-sectional view showing the structure of the power storage module 10A of fig. 1, and fig. 5 (B) is a cross-sectional view showing the structure of the power storage module 10B of fig. 1.

In each drawing, the direction D1 represents the width direction of the power storage module 10A. The direction D2 represents the longitudinal direction of the power storage module 10A. The direction D3 represents the height direction of the power storage module 10A. The direction indicated by the direction D3 is, for example, the vertical direction.

As shown in fig. 3 and 4, the power storage module 10A includes: a frame body 11A; a plurality of power storage cells 12 housed in the housing 11A; 2

bridge parts

13, 13 provided inside the frame body 11A for connecting the upper part and the lower part of the frame body 11A; and 2 flange portions 14Aa and 14Ab provided outside the housing 11A and projecting in opposite directions to each other.

The housing 11A includes a bottom plate 111, a top plate 112, and 2

side plates

113 and 113 connecting the bottom plate 111 and the top plate 112. The housing 11A has

openings

15a and 15b provided at both ends in the longitudinal direction (direction D2). In the present embodiment, the housing 11A has a substantially rectangular shape in a longitudinal side view, the bottom plate 111 and the top plate 112 are arranged parallel to each other, and the 2

side plates

113 and 113 are arranged parallel to each other and perpendicular to the bottom plate 111 and the top plate 112, respectively.

As shown in fig. 5 (a), the 2

bridge portions

13, 13 are disposed between the 2

side plate portions

113, 113 at regular intervals, and are integrally provided from the inner wall surface 111a of the bottom plate portion 111 to the inner wall surface 112a of the top plate portion 112. The wall surfaces 13a of all the bridge portions 13 are parallel to each other. Further, the wall surface 13a of the bridge portion 13 and the inner wall surface 113a of the side plate portion 113 are parallel to each other. Thus, in the housing 11A,

cell housing spaces

16 and 17 capable of housing the plurality of power storage cells 12 are formed between the parallel wall surfaces 13a and 13a of the adjacent 2 bridge portions 13 and between the wall surface 113a on the inner side of the side plate portion 113 and the wall surface 13a of the bridge portion 13, respectively. In this way, since the 2

bridge portions

13 and 13 connect the upper portion and the lower portion of the housing 11A, the rigidity of the housing 11A in the height direction (direction D3) is improved. Therefore, even when the power storage module 10A receives an impact from below, it is possible to suppress transmission of the impact to the power storage cells 12 in the housing 11A and improve the impact resistance against the impact from below the housing 11.

The 2

bridge portions

13 and 13 constitute partition plates that partition the internal space of the housing 11A in the width direction (direction D1) of the housing 11A. Therefore, for example, when a collision load F is input to the power storage module 10A mounted on a vehicle (not shown) along the arrangement direction (direction D1) of the power storage cells 12, the collision load F acts so as to move all the power storage cells 12 in the housing 11A along the input direction (direction D1) of the collision load F. At this time, since the movement of each power storage cell in the housing 11A is restricted by the 2 bridge portions 13, the maximum movement amount of the power storage cell 12 (the movement amount of the power storage cell arranged on the input side of the collision load F) is significantly reduced as compared with the case where the 2

bridge portions

13, 13 are not provided in the housing 11A. As a result, the load applied to the electrical connection portion between the power storage cells 12 and the electrical connection portion between the power storage cell 12 and the outside is reduced when acceleration is input by the collision load F, and the reliability of electrical connection of the power storage cell 12 can be improved.

Note that the power storage module 10A of the present embodiment includes 2 bridge portions 13, but is not limited to this, and may include 1 bridge portion 13, or may include 3 or

more bridge portions

13, 13 ·.

The housing 11A of the present embodiment has 3

unit housing spaces

16, 17, and 16 partitioned by 2 bridge portions 13. The 3

unit housing spaces

16, 17, and 16 are linearly arranged along the arrangement direction (direction D1) of the wall surface 13a of the bridge portion 13 and the wall surface 113a of the side plate portion 113. The bridge 13 extends over the entire length of the housing 11 in the direction D2. Therefore, the

openings

15a and 15b on both side surfaces of the housing 11A are also openings on both side surfaces of the unit housing space 16 (or the unit housing space 17).

The frame 11A may be formed as an integral part by, for example, impact molding or extrusion molding along the D2 direction, the shape being the same along the longitudinal direction (D2 direction). For example, the bottom plate 111, the top plate 112, the 2

side plates

113 and 113, and the 2

bridges

13 and 13 constituting the housing 11A are all made of a metal material having good heat conductivity, such as aluminum or an aluminum alloy. This can improve the strength and heat transfer performance of the housing 11. Further, since it is not necessary to assemble the respective components, the number of components can be reduced, and cost reduction can be achieved.

As shown in fig. 5 (a), the 2 flange portions 14Aa and 14Ab are positioned above the central portion of the housing 11A in the height direction (direction D3). The 2 flange portions 14Aa and 14Ab of the present embodiment are provided at a position H1 above a center line C1 in the height direction of the housing 11A. Therefore, when the 2 flange portions 14Aa and 14Ab are placed on the 2 first vertical wall portions 22, most of the housing 11A is accommodated in the case 2. The 2 flange portions 14Aa and 14Ab of the present embodiment extend from the side plate portion 113 in the width direction (direction D1) of the housing 11A, and extend substantially entirely in the longitudinal direction (direction D2) of the side plate portion 113. Here, "substantially the entire" includes not only a state in which the flange portions 14Aa and 14Ab extend entirely in the longitudinal direction (direction D2) of the side plate portion 113, but also a state in which, for example, a part of the flange portions 14Aa and 14Ab is broken by machining such as cutting, and the flange portions 14Aa and 14Ab extend substantially entirely in the longitudinal direction (direction D2) of the side plate portion 113.

As shown in fig. 5 (B), the power storage module 10B includes: a frame body 11B; a plurality of power storage cells 12 housed in the housing 11B; 2

bridge parts

13, 13 provided inside the frame body 11B for connecting the upper part and the lower part of the frame body 11B; and 2 flange portions 14Ba, 14Bb provided outside the housing 11B and protruding in opposite directions to each other. The structure of the power storage module 10B is the same as that of the power storage module 10A except that the 2 flange portions 14Ba and 14Bb are provided at different positions in the height direction.

The 2 flange portions 14Ba and 14Bb are located above the center portion of the housing 11B in the height direction (direction D3). The 2 flange portions 14Ba and 14Bb of the present embodiment are provided at a position H2 above a center line C2 in the height direction of the housing 11B. The position H2 at which the 2 flange portions 14Ba and 14Bb are provided is smaller than the position H1 at which the 2 flange portions 14Aa and 14Ab are provided (H2 < H1). Thus, in a state where the flange portion 14Ab of the power storage module 10A is overlapped with the flange portion 14Ba of the power storage module 10B, the position in the height direction of the top plate portion 112 in the power storage module 10A can be made the same as the position in the height direction of the top plate portion 112 in the power storage module 10B.

Since the power storage module 10B is disposed outside the power storage module 10A in the longitudinal direction (direction D1) of the power storage module package 1 (fig. 2), a temperature difference between the

power storage modules

10A and 10B may occur during vibration. Therefore, the shape (for example, the outline shape) of the frame 11B of the power storage module 10B may be different from the shape of the frame 11A of the power storage module 10A, and the heat dissipation of the frame 11A may be higher than that of the frame 11B. This reduces the temperature difference between

power storage modules

10A and 10B, and enables uniform heating.

The power storage unit 12 accommodates therein a battery element (not shown) having a positive electrode plate and a negative electrode plate. As shown in fig. 4, the electric storage unit 12 has a horizontally long rectangular shape having: flat in the direction D1, having a height slightly lower than the height of the

unit housing spaces

16, 17, and having a width slightly wider than the width of the

unit housing spaces

16, 17. At one end 12a in the longitudinal direction (direction D2) of power storage cell 12, positive terminal 121A electrically connected to the positive electrode plate of the battery element protrudes, and negative terminal 121B electrically connected to the negative electrode plate of the battery element protrudes. The positive electrode terminal 121A and the negative electrode terminal 121B constitute an electrode terminal 121 of the storage cell 12.

The electric storage cell 12 of the present embodiment has a laminate packaging shape in which the battery element is enclosed in a laminate film, but the electric storage cell of the present invention is not limited to this, and may be an electric storage cell in which the battery element is housed in a metal cell can. The power storage unit 12 may be a power storage unit that stores a battery element together with an electrolyte solution, or may store a battery element that is configured by an all-solid-state battery that does not have an electrolyte solution.

The electric storage cells 12 are arranged such that the positive electrode terminal 121A and the negative electrode terminal 121B are oriented in the vertical direction (direction D3), and are inserted through the opening 15a (or the opening 15B), thereby storing 4 electric storage cells 12 in each cell storage space. As a result, a total of 12 power storage cells 12 are stored in the 3

cell storage spaces

16, 17, and 16 in the housing 11A.

The positive electrode terminal 121A of the electric storage cell 12 is disposed on the opening 15a side of the openings 15a and 15B on both side surfaces, and the negative electrode terminal 121B is similarly disposed on the opening 15a side of the openings 15a and 15B on both side surfaces. Positive electrode terminals 121A and negative electrode terminals 121B of all the power storage cells 12 protrude from the opening 15a to the side of the frame 11A. Thus, the electricity take-out direction of the power storage cell 12 is the direction D2, which is different from the pressing direction (direction D1) of the power storage cell 12 by the pressing member 18, as described later. Therefore, the size and weight of the housing 11A can be reduced, and the workability of assembling the power storage module 10A is improved. Since both the positive electrode terminal 121A and the negative electrode terminal 121B of the power storage cell 12 are disposed apart from the cooling medium inlet and outlet of the temperature adjusting device described later, short-circuiting due to leakage of the cooling medium or the like can be suppressed.

In the present embodiment, the positive electrode terminal 121A and the negative electrode terminal 121B of the adjacent

power storage cells

12 and 12 are arranged oppositely in the height direction (direction D3) of the housing 11A (fig. 4). That is, when the positive electrode terminal 121A of one of the power storage cells 12 is positioned on the upper side of the housing 11, the positive electrode terminal 121A of the other power storage cell 12 is positioned on the lower side of the housing 11A. Therefore, in the plurality of power storage cells 12, the plurality of positive electrode terminals 121A and the plurality of negative electrode terminals 121B protruding from the opening 15a on the side surface of the frame 11A are alternately arranged along the width direction (direction D1) of the frame 11A. One positive electrode terminal 121A and the other negative electrode terminal 121B of the adjacent

power storage cells

12, 12 are electrically connected by a bus bar, not shown, and all the power storage cells 12 in the housing 11A are connected in series. The positive electrode terminal 121A and the negative electrode terminal 121B of the

power storage cells

12 and 12 disposed at both ends in the width direction (direction D1) of the power storage module 10A are electrically connected to external equipment by a wire harness (not shown).

In the present embodiment, all the power storage cells 12 in the housing 11A are connected in series by the bus bar, but the present invention is not limited to this, and the positive electrode terminal 121A and the negative electrode terminal 121B of the adjacent

power storage cells

12, 12 may be arranged so that their orientations are aligned in the height direction (direction D3). That is, when the positive electrode terminal 121A of one of the power storage cells 12 is positioned above the housing 11A, the positive electrode terminal 121A of the other power storage cell 12 may be positioned above the housing 11A. In this case, the positive electrode terminal 121A and the other positive electrode terminal 121A of the adjacent

power storage cells

12 and 12 are electrically connected by a bus bar, not shown, and the negative electrode terminal 121B and the other negative electrode terminal 121B of the adjacent

power storage cells

12 and 12 are electrically connected by another bus bar, not shown. Thereby, all the power storage cells 12 in the housing 11A are connected in parallel.

The power storage module 10A may include a pressing member 18 (fig. 4) housed in the housing 11A together with the plurality of power storage cells 12. The pressing members 18 are formed in a rectangular sheet shape similar to the electricity storage cells 12, and 1 pressing member 18 is housed in each of the

cell housing spaces

16, 17, and 16. The pressing member 18 is inserted into the cell housing space 16 (or the cell housing space 17) through the opening 15a in a state of being laminated with the power storage cell 12, and is thereby housed in each cell housing space. In the present embodiment, the pressing member 18 is interposed between the central 2

power storage cells

12, 12 so as to divide the 4 power storage cells 12 in each cell housing space by 2.

The pressing member 18 applies a pressing force to the wall surface 13a of the bridge portion 13 or the wall surface 113a of the side plate portion 113 to the 4 power storage cells 12 stored in the same cell storage space 16 (or cell storage space 17) as the pressing member 18 (fig. 5 (a) and 5 (b)). That is, the pressing member 18 presses each of the 2 power storage cells 12 disposed on both surfaces thereof with a predetermined pressing force toward the wall surface 13a of the bridge portion 13 or the wall surface 113a of the side plate portion 113 disposed on the side opposite to the pressing member 18. Thereby, each of the 4 power storage cells 12 in each cell housing space is stably held in each cell housing space. Further, since the power storage cells 12 are uniformly pressed against the wall surfaces 13a of the bridge portions 13 and the wall surfaces 113a of the side plate portions 113 by the sheet-shaped pressing members 18, the thermal contact resistance between the power storage cells 12 and the wall surfaces 13a and 113a is also reduced, and the temperature rise of the power storage cells 12 is suppressed.

The pressing member 18 is not particularly limited as long as it can be easily compressed, can exert a pressing force to such an extent that the electricity storage cells 12 in the

cell housing spaces

16 and 17 can be stably held, and can be formed into a sheet shape, and a structure including an elastic body and having a swelling property is preferable. The pressing member 18, which includes an elastic body and a structure having a swelling property, can absorb the expansion force of the electricity storage cells 12 in the cell storage spaces by compression when the electricity storage cells are expanded by charging and discharging. Therefore, the load on the wall surface 13a of the bridge portion 13 and the wall surface 113a of the side plate portion 113 and the load on the housing 11A when the storage cell 12 is expanded can be reduced. Further, since the pressing load is cancelled out when the power storage cells 12 expand, the strength and rigidity of the wall surfaces 13a of the bridge portions 13 and the wall surfaces 113a of the side plate portions 113 can be set to be small, and therefore, the weight and cost of the power storage module 10A can be reduced.

As the elastomer, a foamed product of rubber or resin can be used. By appropriately setting the expansion ratio of the foam, the degree of absorption of the pressing force on the power storage cell 12 and the expansion force of the power storage cell 12 can be easily adjusted. Further, by using the foam, the

power storage modules

10A and 10B can be further reduced in weight and cost.

As the structure having the aforementioned swellability, a swellability resin or a resin fiber aggregate swollen by impregnation with a liquid can be used. Specific examples of the swellable resin include PVDF (polyvinylidene fluoride) and silicone resin. As a specific resin fiber aggregate, a laminate of a nonwoven fabric of polyolefin resin fibers and phenol resin fibers can be exemplified. The structure having swelling properties can easily adjust the pressing force on the electricity storage cells 12 and the degree of absorption of the expansion force of the electricity storage cells 12 by appropriately adjusting the density, type, diameter, length, and shape of the resin and the resin fiber. In addition, in the case of using a structure having swelling properties, as in the case of the foam, the

power storage modules

10A and 10B can be further reduced in weight and cost.

The pressing member 18 may be stacked on the power storage cells 12 and stored in the cell storage space 16 (or the cell storage space 17), and then expanded in the thickness direction (the direction D1) of the pressing member 18 in each cell storage space, thereby pressing the power storage cells 12 against the wall surface 13a of the bridge portion 13 or the wall surface 113a of the side plate portion 113 to hold the power storage cells 12. This enables the power storage cells 12 in the cell storage spaces to be stably and reliably held. The pressing member 18 is not held by bonding the power storage unit 12 using an adhesive, and therefore, is easily disassembled, and the recyclability is improved.

Further, since the pressing member 18 of the present embodiment is interposed between the 2

power storage cells

12 and 12, the wall surface 13a and the wall surface 13a or the wall surface 13a and the wall surface 113a, which are parallel to each other and which partition the cell housing space, can be used as the heat transfer surface. This can further suppress a temperature increase in the power storage unit 12.

When the pressing member 18 and the electricity storage cells 12 are stacked and stored in the cell storage space 16 (or the cell storage space 17), the pressing member 18 may be stored in a compressed state in each cell storage space, and the pressing member 18 may be expanded in each cell storage space by a restoring force restored from the compressed state. This makes it possible to easily insert the power storage cells 12 into the cell storage spaces, and thus, assembly of the power storage module 10A is facilitated.

The pressing member 18 may be covered with a resin film not shown. That is, when the pressing member 18 includes, for example, an elastic body, the elastic body 40 is covered with a resin film, and the elastic body is enclosed in the resin film. As the resin film, a general soft resin film such as polypropylene can be used. When the pressing member 18 includes a structure having a swelling property, the pressing member 18 can be impregnated with the liquid in the resin film without impregnating the liquid into each unit housing space.

By using the pressing member 18 covered with the resin film in this manner, the pressing member 18 can be used as an insulator. In particular, when the power storage cell 12 is a power storage cell using a metal cell can, the pressing member 18 can be used instead of the insulating separators, and therefore the number of insulating separators can be reduced. The pressing member 18 can also be used as an insulator when the adjacent

power storage cells

12 and 12 are electrically connected to each other through the pressing member 18.

In the power storage module 10A, a sheet-shaped temperature control device 19 (fig. 4) may be attached to at least one of the upper portion and the lower portion of the housing 11A. In the present embodiment, for example, a water jacket (see fig. 6) as the temperature control device 19 is fixed to the wall surface 111b of the housing 11A on the outer side of the bottom plate portion 111. In the case where the temperature control device 19 is provided in the power storage module 10A, a temperature measurement device for measuring the temperature of the housing 11A may be attached to any of the upper portion, the lower portion, and the side portion of the housing 11A.

Since the frame 11A is integrally formed of a metal material, the heat transfer performance is improved, and therefore, the temperatures of the wall surfaces 13a and 113a in the respective unit housing spaces and the outer surface of the frame 11A are made uniform. Therefore, the temperature adjusting member and the temperature measuring member can be easily mounted in practice, and the ease of assembly and cost reduction can be easily achieved.

The temperature control device 19 has a coolant inlet/outlet 119 connected to an external coolant circuit at one end 19a in the longitudinal direction (direction D2). The cooling medium inlet and outlet 119 of the temperature control device 19 is disposed on the opposite side of the electrode terminals 121 of the plurality of power storage cells 12.

The coolant inlet/outlet 119 includes: an introduction portion 119A for introducing the cooling medium supplied from above into the temperature control device 19; and a discharge portion 119B for discharging the cooling medium in the temperature control device 19 upward. The inlet portion 119A of the coolant inlet/outlet 119 is disposed on the opening 15B side of the openings 15a and 15B of the housing 11A, and the outlet portion 119B is also disposed on the opening 15B side of the openings 15a and 15B on both sides. The introduction portion 119A and the discharge portion 119B of the temperature control device 19 are located on the side of the opening 15B and protrude upward.

In this way, since both the introduction portion 119A and the discharge portion 119B of the temperature control device 19 are disposed on the opposite side of the positive electrode terminal 121A and the negative electrode terminal 121B in the longitudinal direction (direction D1) of the housing 11A, the assembly and removal workability of the temperature control device 19 are improved. In addition, short-circuiting due to leakage of the cooling medium of the temperature control device 19 and the like can be suppressed.

In addition, when the plurality of power storage cells 12 are arranged in 2 rows and N columns (N is a natural number), the cooling medium inlet/outlet 119 of all the power storage cells 12 in the 1 st row may be arranged inside the power storage module package 1 in the width direction (D2 direction) of the power storage module package 1, and the cooling medium inlet/outlet 119 of all the power storage cells 12 in the 2 nd row may also be arranged inside the power storage module package 1 in the width direction (D2 direction) of the power storage module package 1. In this case, the plurality of electrode terminals 121 in all the power storage cells 12 are arranged outside the power storage module package 1 in the width direction (direction D2) of the power storage module package 1. According to this configuration, in the power storage module package 1, the cooling medium circuit can be arranged in the center portion in the width direction (direction D2) of the power storage module package 1, and the circuits can be arranged at both end portions in the width direction (direction D2) of the power storage module package 1. This can reduce the weight and cost by simplifying the circuit design while suppressing electrical problems by securing the distance between the circuit and the cooling medium circuit.

Alternatively, the cooling medium inlet/outlet 119 of all the power storage cells 12 in row 1 may be disposed outside the power storage module package 1 in the width direction (D2 direction) of the power storage module package 1, and the cooling medium inlet/outlet 119 of all the power storage cells 12 in row 2 may be disposed outside the power storage module package 1 in the width direction (D2 direction) of the power storage module package 1. In this case, the plurality of electrode terminals 121 in all the power storage cells 12 are arranged inside the power storage module package 1 in the width direction (direction D2) of the power storage module package 1. According to this configuration, while electrical defects are suppressed by securing a distance between the circuit and the cooling medium circuit, the circuit design can be simplified to reduce the weight and the cost.

Fig. 6 (a) is a cross-sectional view of the power storage module package 1 taken along line I-I of fig. 1, and fig. 6 (b) is an enlarged partial cross-sectional view of a portion indicated by a broken line P.

As shown in fig. 6 (a), in the power storage module 10A, the 2 flange portions 14Aa and 14Ab of the frame 11A are fixed to the upper end portions 22Aa and 22Ba of the adjacent thick-walled vertical wall portion 22A and thin-walled vertical wall portion 22B, respectively. In the power storage module 10B, the 2 flange portions 14Ba and 14Bb of the frame 11B are fixed to the upper end portions 22Ba and 22Ba of the adjacent thin-

walled portions

22B and 22B, respectively. The form of fixing the flange portions 14Aa, 14Ab, 14Ba, and 14Bb is not particularly limited, but each flange portion is fixed to each first vertical wall portion via a bolt 4 with a washer, for example. In this way, by adopting the structure in which the flange portions 14Aa and 14Ab of the frame body 11A are fixed to the upper end portions 22Aa and 22Ba, and the 2 flange portions 14Ba and 14Bb of the frame body 11B are fixed to the upper end portions 22Ba and 22Ba, when the plurality of

power storage modules

10A and 10B are assembled to the case 2, the respective power storage modules can be easily fixed to the case 2 from above the case 2, and the assemblability of the

power storage modules

10A and 10B is improved.

The upper end portion 22Aa of the thick vertical wall portion 22A has a non-overlapping portion 31 in which the flange portion 14Ab provided on one of the adjacent 2

power storage modules

10A, 10A and the flange portion 14Aa provided on the other of the 2

power storage modules

10A, 10A do not overlap. Further, an overlapping portion 32 is provided at an upper end portion 22Ba of the thin-walled vertical wall portion 22B, in which a flange portion 14Aa provided at one of the adjacent 2

power storage modules

10A and 10B overlaps a flange portion 14Bb provided at the other of the 2

power storage modules

10A and 10B. In the non-overlapping portion 31, the flange portions 14Ab, 14Aa are fixed to the thick vertical wall portion 22A via bolts 4, respectively. On the other hand, in the overlapping portion 32, the flange portions 14Ab, 14Aa are fixed to the thin vertical wall portion 22B by 1 bolt 4 in a co-fastening manner. By providing the non-overlapping portion 31 at the upper end portion 22Aa of the thick vertical wall portion 22A in this manner, both of the 2

power storage modules

10A and 10A can be firmly fixed to the thick vertical wall portion 22A. Further, by providing the overlapping portion 32 on the upper end portion 22Ba of the thin-walled vertical wall portion 22B, the dimension of the power storage module package 1 in the longitudinal direction (direction D1) can be reduced, and the power storage module package 1 can be reduced in size and space.

In the present embodiment, space 24A is provided between frame 11A of power storage module 10A and bottom wall 21 of case 2 (fig. 6 (b)). Space 24A is defined by, for example, bottom wall 21, thick vertical wall 22A, thin vertical wall 22B of case 2, and frame 11A of power storage module 10A. Space portion 24A is formed along the entire length of housing 11A in the longitudinal direction (direction D2) of housing 11A. Temperature control device 19 is disposed in space portion 24A.

Also, a space 24B is provided between frame 11B of power storage module 10B and bottom wall 21 of case 2 (fig. 6 (a)). Space 24B is defined by, for example, bottom wall 21 of case 2, 2 thin vertical walls 22B, and frame 11B of power storage module 10A. Space portion 24B is formed along the entire length of housing 11B in the longitudinal direction (direction D2) of housing 11B.

By providing space 24A between frame 11A of power storage module 10A and bottom wall 21 of case 2 and providing space 24B between frame 11B of power storage module 10B and bottom wall 21 of case 2 in this manner, when an impact is applied to bottom wall 21 of power storage module package 1, impact is absorbed by

spaces

24A and 24B, and transmission of the impact to

power storage modules

10A and 10B can be prevented or suppressed.

Space portions

24A and 24B constitute heat insulating portions using air as a heat insulating material. Therefore, the heat insulation between the power storage module package 1 and the

power storage modules

10A and 10B is improved, and excellent cooling and heating of the

power storage modules

10A and 10B can be achieved using the temperature control device 19. In addition, when used in cold regions or the like, excessive cooling of the

power storage modules

10A and 10B can be suppressed, and the

power storage modules

10A and 10B can be easily maintained at appropriate temperatures.

As described above, according to the present embodiment, since the 2 flange portions 14Aa and 14Ab provided in the frame body 11A are positioned above the center portion C1 in the height direction of the frame body 11A and the 2 flange portions 14Ba and 14Bb provided in the frame body 11B are positioned above the center portion C2 in the height direction of the frame body 11B, the length in the height direction (direction of D3) of the first vertical wall portion 22 and the second vertical wall portion 23 of the power storage module package 1 can be secured, and the rigidity in the height direction of the power storage module package 1 can be improved. Further, since the bridge portions 13 are provided inside the

frames

11A and 11B, respectively, the rigidity of the

frames

11A and 11B in the height direction is improved, and the impact resistance against the impact from below the frame 11 can be improved. Further, the bridge portion 13 is in contact with or pressure-contacted to the electricity storage cells 12, whereby the wall surface 13a of the bridge portion 13 forms a heat transfer surface, and the cooling efficiency of the electricity storage cells 12 can be improved.

Further, since the case 2 includes the plurality of first

vertical wall portions

22 and 22 extending from the bottom wall portion 21 and arranged at intervals, and the second vertical wall portion 23 provided perpendicular to the first vertical wall portion 22, the rigidity in the longitudinal direction and the width direction of the power storage module package 1 can be ensured. Further, since the 2 flange portions 14Aa and 14Ab of the frame body 11A are fixed to the upper end portions 22Ba and 22Aa of the adjacent thick-walled vertical wall portion 22A and thin-walled vertical wall portion 22B, respectively, and the 2 flange portions 14Ba and 14Bb of the frame body 11B are fixed to the upper end portions 22Ba and 22Ba of the adjacent thin-walled

vertical wall portions

22B and 22B, respectively, the dimension in the height direction (direction D3) of the first vertical wall portion 22 and the second vertical wall portion 23 can be secured without increasing the dimension in the height direction of the power storage module package 1. This can improve the rigidity of the power storage module package 1 in the height direction, and can improve the ease of assembling the

power storage modules

10A and 10B into the case 2.

Therefore, it is possible to improve the assembling property of the

power storage modules

10A and 10B and to improve the impact resistance of the

power storage modules

10A and 10B and the power storage module package 1 against an impact from below while ensuring sufficient rigidity and vehicle-mounting property of the

power storage modules

10A and 10B and the power storage module package 1.

Fig. 7 (a) is a cross-sectional view showing a modification of 2 flange portions 14Aa and 14Ab in fig. 5 (a), and fig. 7 (b) is a cross-sectional view showing another modification.

As shown in fig. 7 (a), the 2 flange portions 41Aa and 41Ab may be located at the same height as the top plate portion 112 of the housing 11A. This makes it possible to arrange the power storage module 10A so as not to protrude from the upper surface of the case 2, to reduce the height of the power storage module package 1, and to easily provide a space between the power storage module 10A and the lid 3.

As shown in fig. 7 (b), the 2 flange portions 42Aa and 42Ab may have different heights. In this case, the configuration of the 2 flange portions of the power storage module 10B can be set to be the same as the configuration of the 2 flange portions 42Aa and 42Ab of the power storage module 10A. This can simplify the manufacturing process and reduce the cost.

Fig. 8 (a) and 8 (b) are cross-sectional views showing another modification of the 2 flange portions 14Aa and 14Ab in fig. 5 (a), respectively.

In the above embodiment, the 2 flange portions 14Aa and 14Ab extend substantially entirely in the longitudinal direction (direction D2) of the side plate portion 113, but the present invention is not limited to this, and as shown in fig. 8 (a), the 2 flange portions 43Aa and 43Ab may extend in a part of the side plate portion 113 in the longitudinal direction (direction D2) of the side plate portion 113. As shown in fig. 8 b, the flange portion 44Aa may extend intermittently in the longitudinal direction (direction D2) of the side plate portion 113, and the flange portion 44Ab may extend intermittently in the longitudinal direction (direction D2) of the side plate portion 113. This can reduce the weight of the

power storage modules

10A and 10B and the power storage module package 1.

Fig. 9 (a) is a cross-sectional view showing a modification of the power storage module package 1 of fig. 1, and fig. 9 (b) is a cross-sectional view showing another modification of the power storage module package 1 of fig. 1.

In the above embodiment, the temperature control device 19 is fixed to the wall surface 111b on the outer side of the bottom plate portion 111 in the housing 11A, but the temperature control device 19 is not limited to this, and as shown in fig. 9 (a), the temperature control device 19 may be fixed to the wall surface 112b on the upper side of the top plate portion 112 in the housing 11A. As a result, even when an impact is applied from below the power storage module package 1, the temperature control device 19 can be prevented from being deformed or damaged, and the impact resistance can be further improved.

As shown in fig. 9 (B), the temperature control device 19A may be fixed to the outer wall surface 111B of the bottom plate portion 111 of the housing 11A, and the temperature control device 19B may be fixed to the outer wall surface 112B of the top plate portion 112. In addition, when the

temperature control devices

19A and 19B are provided in the power storage module 10A, 2 temperature measurement devices for measuring the temperature of the housing 11A may be attached to 2 positions of the upper portion, the lower portion, and the side portion of the housing 11A. This enables more excellent cooling and heating of the power storage module 10A to be achieved using the

temperature control devices

19A and 19B. Further, more excellent cooling/heating of the power storage module 10B can be achieved by using the

temperature control devices

19A and 19B.

Fig. 10 is a cross-sectional view showing a modification of the power storage module package 1 shown in fig. 6 (b).

As shown in fig. 10, heat insulating member 51 may be disposed in space portion 24A of power storage module package 1. The heat insulating member 51 is flat in the direction D3, and is disposed, for example, between the bottom wall portion 21 of the power storage module package 1 and the temperature control device 19. The heat insulating member 51 may be disposed over the entire width direction (direction D1) of the power storage module 10A and over the entire length direction (direction D2) of the power storage module 10A. The material constituting the heat insulating member 51 is not particularly limited as long as it can insulate heat between the bottom wall portion 21 of the electricity storage module package 1 and the temperature control device 19, and is, for example, a nonwoven fabric, preferably a microfiber nonwoven fabric.

The heat insulating member 51 may constitute a cushioning member interposed between the bottom wall portion 21 of the power storage module package 1 and the temperature control device 19. In this case, the heat insulating member 51 is made of, for example, foamed plastic. By configuring the heat insulating member 51 as a cushioning member, it is possible to improve the heat insulating property and further improve the impact resistance against the impact from below the power storage module package 1.

Fig. 11 (a) and 11 (b) are plan views showing modifications of the casing 2 in fig. 2 (a), and fig. 12 is a plan view showing another modification of the casing 2 in fig. 2 (a).

In the above embodiment, the case 2 has the plurality of first vertical wall portions 22 and the second vertical wall portions 23, but the present invention is not limited thereto, and the second vertical wall portions 23 may not be provided when sufficient rigidity can be ensured by the bottom wall portion 21 and the plurality of first vertical wall portions 22. That is, as shown in fig. 11 (a), the case 5 may have a bottom wall 21 and a plurality of first vertical walls 22 extending from the bottom wall 21 and arranged in a spaced-apart arrangement, but may not have a second vertical wall. This improves the impact resistance against the impact from below the power storage module package 1, and also reduces the weight of the case 5.

In the above embodiment, the plurality of

power storage modules

10A and 10B are arranged in the case 2 in a matrix (2 rows and 4 columns), but the present invention is not limited thereto, and the plurality of

power storage modules

10A and 10B may be arranged in 1 row and 4 columns. That is, as shown in fig. 11 (B), the plurality of

power storage modules

10A and 10B may be arranged in the case 6 only in the longitudinal direction (direction D1). This improves the impact resistance against the impact from below the power storage module package 1, and also makes it possible to save the space of the case 6.

The plurality of

power storage modules

10A and 10B may be arranged in X rows and Y columns (X, Y is a natural number equal to or greater than 1). For example, as shown in fig. 12, the plurality of

power storage modules

10A and 10B may be arranged in 4 rows and 4 columns in the case 7.

In fig. 12, the case 7 includes: a bottom wall portion 21; a plurality of first vertical wall portions 22 extending from the bottom wall portion 21 and arranged at intervals; and a plurality of second vertical wall portions 23 arranged in a spaced-apart array perpendicular to the plurality of first vertical wall portions 22. The plurality of second vertical wall portions 23 are configured by, for example, a thick vertical wall portion 23A disposed at the center portion in the longitudinal direction (direction D2) of the case 2 in a plan view, and a thin vertical wall portion 23B disposed adjacent to the thick vertical wall portion 23A. The plurality of second vertical wall portions 23 may be formed of a plurality of second vertical wall portions having the same thickness.

According to this configuration, since the plurality of first vertical wall portions 22 and the plurality of second vertical wall portions 23 form the well-shaped structure, the impact resistance against the impact from below the power storage module package 1 can be further improved. Further, the number of power storage modules mounted on 1 power storage module package can be increased, and the capacity of the power storage module package 1 can be increased.

The embodiments of the present invention have been described above in detail, but the present invention is not limited to the above embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims.

Claims

1. An electric storage module, wherein,

the power storage module includes:

a frame body;

a plurality of power storage cells housed in the housing;

a bridge portion provided inside the frame body for connecting an upper portion and a lower portion of the frame body; and

2 flange parts which are arranged outside the frame body and extend towards opposite directions,

the 2 flange portions are located above a central portion of the housing in the height direction.

2. The power storage module according to claim 1,

the frame body has a bottom plate part, a top plate part, and 2 side plate parts connecting the bottom plate part and the top plate part,

the 2 flange portions extend from the side plate portions in the width direction of the frame body and extend substantially entirely in the longitudinal direction of the side plate portions.

3. The power storage module according to claim 1,

a sheet-shaped temperature control device is attached to at least one of the upper portion and the lower portion of the housing.

4. The power storage module according to claim 3,

the cooling medium inlet and outlet of the temperature control device are disposed on the opposite side of the positive and negative terminals of the plurality of power storage cells.

5. An electric storage module package, wherein,

the power storage module package includes a plurality of power storage modules and a case for housing the plurality of power storage modules,

the power storage module includes:

a frame body;

a plurality of power storage cells housed inside the housing;

the 2 flange parts are positioned on the upper side of the central part of the frame body in the height direction,

the box body is provided with:

a bottom wall portion;

a plurality of first vertical wall portions extending from the bottom wall portion and arranged in a spaced-apart arrangement,

the 2 flange portions of the frame are fixed to upper end portions of the adjacent 2 first vertical wall portions, respectively.

6. The power storage module package according to claim 5,

a space portion is provided between the frame of the power storage module and the bottom wall portion of the case.

7. The power storage module package according to claim 6,

a heat insulating member is disposed in the space.

8. The power storage module package according to any one of claims 5 to 7,

a sheet-shaped temperature control device is attached to at least one of an upper portion and a lower portion of the housing of the power storage module.

9. The power storage module package according to claim 8,

the cooling medium inlet and outlet of the temperature control device are disposed on the opposite side of the electrode terminals of the plurality of power storage cells.

10. The power storage module package according to claim 5,

the plurality of first vertical wall portions are configured by a thick vertical wall portion arranged at the central portion of the box body in a plan view, and a thin vertical wall portion arranged adjacent to the thick vertical wall portion.

11. The power storage module package according to claim 10,

the thick-walled vertical wall portion has, at an upper end portion thereof, a non-overlapping portion in which the flange portion provided on one of the 2 adjacent power storage modules does not overlap with the flange portion provided on the other of the 2 power storage modules,

the thin-walled vertical wall portion has an overlapping portion at an upper end portion thereof, the overlapping portion overlapping a flange portion provided on one of 2 adjacent power storage modules and the flange portion provided on the other of the 2 power storage modules.

12. The power storage module package according to claim 5,

the box body also has at least 1 second vertical wall part vertically arranged with the plurality of first vertical wall parts.

13. The power storage module package according to claim 5,

the power storage module package further includes a cover body detachably provided to cover an upper portion of the case body.